Microporous filtration membrane penetrates substances
The intercepted substances are mainly proteins, various types of □, bacteria, viruses, latex, particles, with a filtration accuracy of 10-4cm~10-7cm. Different pore sizes of ultrafiltration membranes are used to separate liquids, with a molecular cutting weight (CWCO) generally ranging from 60 to 500000 and a pore size of 100nm (nanometers).
The substances filtered by microporous filtration membranes are mainly water, solutions, and dissolved substances. The intercepted substances are mainly suspended solids, bacteria, and particles. The filtration precision includes 0.2cm, 0.5cm, 1.0cm, 2.0cm, 3.0cm, 5.0cm, and 10.0cm. Its important characteristics in the field of filtration are:
All particles larger than the mesh size are intercepted on the surface of the membrane, overcoming the requirement that conventional deep filtration media cannot achieve "absolute value" filtration, while microporous filtration membranes are the preferred material for "absolute value" filters.
Uniform aperture and high filtration accuracy
The pore size of microporous membrane is very uniform, so it is a homogeneous membrane, which is significantly different from reverse osmosis and ultrafiltration. The ratio of the maximum pore size to the average pore size is generally 3-4, and the pore size distribution is basically normally distributed. Therefore, it is often used as a means of ensuring filtration accuracy and separation efficiency. High porosity and fast flow rate.
